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Finding the Fourth Proportional to 72,095.76, 99,477.70 and 40,259.76

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Solution

The fourth proportional to 72,095.76, 99,477.70 and 40,259.76 is: 55,550.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,095.76 : 99,477.70 = 40,259.76 : x
  2. Step 2: Convert to fraction form
    72,095.76/99,477.70 = 40,259.76/x
  3. Step 3: Cross multiply
    72,095.76x = 99,477.70 × 40,259.76
  4. Step 4: Simplify right side
    72,095.76x = 4,004,948,327.35
  5. Step 5: Solve for x
    x = 4,004,948,327.35/72,095.76
  6. Step 6: Final answer
    x = 55,550.40

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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.