Home / 76,402.11-105,406.02-56,306.91

Finding the Fourth Proportional to 76,402.11, 105,406.02 and 56,306.91

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Solution

The fourth proportional to 76,402.11, 105,406.02 and 56,306.91 is: 77,682.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,402.11 : 105,406.02 = 56,306.91 : x
  2. Step 2: Convert to fraction form
    76,402.11/105,406.02 = 56,306.91/x
  3. Step 3: Cross multiply
    76,402.11x = 105,406.02 × 56,306.91
  4. Step 4: Simplify right side
    76,402.11x = 5,935,087,281.60
  5. Step 5: Solve for x
    x = 5,935,087,281.60/76,402.11
  6. Step 6: Final answer
    x = 77,682.24

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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.