Home / 72,752.04-100,430.16-56,582.76

Finding the Fourth Proportional to 72,752.04, 100,430.16 and 56,582.76

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Solution

The fourth proportional to 72,752.04, 100,430.16 and 56,582.76 is: 78,109.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,752.04 : 100,430.16 = 56,582.76 : x
  2. Step 2: Convert to fraction form
    72,752.04/100,430.16 = 56,582.76/x
  3. Step 3: Cross multiply
    72,752.04x = 100,430.16 × 56,582.76
  4. Step 4: Simplify right side
    72,752.04x = 5,682,615,640.04
  5. Step 5: Solve for x
    x = 5,682,615,640.04/72,752.04
  6. Step 6: Final answer
    x = 78,109.36

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Double scale
Find fourth proportional to 72,753.04, 100,431.54 and 56,583.76
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.