Home / 85,746.48-128,588.13-29,572.17

Finding the Fourth Proportional to 85,746.48, 128,588.13 and 29,572.17

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Solution

The fourth proportional to 85,746.48, 128,588.13 and 29,572.17 is: 44,347.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,746.48 : 128,588.13 = 29,572.17 : x
  2. Step 2: Convert to fraction form
    85,746.48/128,588.13 = 29,572.17/x
  3. Step 3: Cross multiply
    85,746.48x = 128,588.13 × 29,572.17
  4. Step 4: Simplify right side
    85,746.48x = 3,802,630,040.34
  5. Step 5: Solve for x
    x = 3,802,630,040.34/85,746.48
  6. Step 6: Final answer
    x = 44,347.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.