Home / 87,369,620.21-120,572,638.29-47,679,713.61

Finding the Fourth Proportional to 87,369,620.21, 120,572,638.29 and 47,679,713.61

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Solution

The fourth proportional to 87,369,620.21, 120,572,638.29 and 47,679,713.61 is: 65,799,403.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,369,620.21 : 120,572,638.29 = 47,679,713.61 : x
  2. Step 2: Convert to fraction form
    87,369,620.21/120,572,638.29 = 47,679,713.61/x
  3. Step 3: Cross multiply
    87,369,620.21x = 120,572,638.29 × 47,679,713.61
  4. Step 4: Simplify right side
    87,369,620.21x = 5,748,868,862,869,320
  5. Step 5: Solve for x
    x = 5,748,868,862,869,320/87,369,620.21
  6. Step 6: Final answer
    x = 65,799,403.15

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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.