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Finding the Fourth Proportional to 72,148.52, 99,500.50 and 45,293.53

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Solution

The fourth proportional to 72,148.52, 99,500.50 and 45,293.53 is: 62,464.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,148.52 : 99,500.50 = 45,293.53 : x
  2. Step 2: Convert to fraction form
    72,148.52/99,500.50 = 45,293.53/x
  3. Step 3: Cross multiply
    72,148.52x = 99,500.50 × 45,293.53
  4. Step 4: Simplify right side
    72,148.52x = 4,506,728,881.77
  5. Step 5: Solve for x
    x = 4,506,728,881.77/72,148.52
  6. Step 6: Final answer
    x = 62,464.61

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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.