Home / 56,812.61-78,543.12-42,640.85

Finding the Fourth Proportional to 56,812.61, 78,543.12 and 42,640.85

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Solution

The fourth proportional to 56,812.61, 78,543.12 and 42,640.85 is: 58,950.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,812.61 : 78,543.12 = 42,640.85 : x
  2. Step 2: Convert to fraction form
    56,812.61/78,543.12 = 42,640.85/x
  3. Step 3: Cross multiply
    56,812.61x = 78,543.12 × 42,640.85
  4. Step 4: Simplify right side
    56,812.61x = 3,349,145,398.45
  5. Step 5: Solve for x
    x = 3,349,145,398.45/56,812.61
  6. Step 6: Final answer
    x = 58,950.74

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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.