Home / 87,400.74-120,548.50-64,740.69

Finding the Fourth Proportional to 87,400.74, 120,548.50 and 64,740.69

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Solution

The fourth proportional to 87,400.74, 120,548.50 and 64,740.69 is: 89,294.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,400.74 : 120,548.50 = 64,740.69 : x
  2. Step 2: Convert to fraction form
    87,400.74/120,548.50 = 64,740.69/x
  3. Step 3: Cross multiply
    87,400.74x = 120,548.50 × 64,740.69
  4. Step 4: Simplify right side
    87,400.74x = 7,804,393,068.47
  5. Step 5: Solve for x
    x = 7,804,393,068.47/87,400.74
  6. Step 6: Final answer
    x = 89,294.36

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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.