Home / 87,445.04-120,574.32-71,877.92

Finding the Fourth Proportional to 87,445.04, 120,574.32 and 71,877.92

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Solution

The fourth proportional to 87,445.04, 120,574.32 and 71,877.92 is: 99,109.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,445.04 : 120,574.32 = 71,877.92 : x
  2. Step 2: Convert to fraction form
    87,445.04/120,574.32 = 71,877.92/x
  3. Step 3: Cross multiply
    87,445.04x = 120,574.32 × 71,877.92
  4. Step 4: Simplify right side
    87,445.04x = 8,666,631,327.01
  5. Step 5: Solve for x
    x = 8,666,631,327.01/87,445.04
  6. Step 6: Final answer
    x = 99,109.47

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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.