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Finding the Fourth Proportional to 76,352.71, 105,363.19 and 42,360.84

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Solution

The fourth proportional to 76,352.71, 105,363.19 and 42,360.84 is: 58,455.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,352.71 : 105,363.19 = 42,360.84 : x
  2. Step 2: Convert to fraction form
    76,352.71/105,363.19 = 42,360.84/x
  3. Step 3: Cross multiply
    76,352.71x = 105,363.19 × 42,360.84
  4. Step 4: Simplify right side
    76,352.71x = 4,463,272,494.86
  5. Step 5: Solve for x
    x = 4,463,272,494.86/76,352.71
  6. Step 6: Final answer
    x = 58,455.98

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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.