Home / 87,088.47-120,070.81-56,407.41

Finding the Fourth Proportional to 87,088.47, 120,070.81 and 56,407.41

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Solution

The fourth proportional to 87,088.47, 120,070.81 and 56,407.41 is: 77,770.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,088.47 : 120,070.81 = 56,407.41 : x
  2. Step 2: Convert to fraction form
    87,088.47/120,070.81 = 56,407.41/x
  3. Step 3: Cross multiply
    87,088.47x = 120,070.81 × 56,407.41
  4. Step 4: Simplify right side
    87,088.47x = 6,772,883,408.70
  5. Step 5: Solve for x
    x = 6,772,883,408.70/87,088.47
  6. Step 6: Final answer
    x = 77,770.15

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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.