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Finding the Fourth Proportional to 72,158.54, 99,514.30 and 45,303.54

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Solution

The fourth proportional to 72,158.54, 99,514.30 and 45,303.54 is: 62,478.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,158.54 : 99,514.30 = 45,303.54 : x
  2. Step 2: Convert to fraction form
    72,158.54/99,514.30 = 45,303.54/x
  3. Step 3: Cross multiply
    72,158.54x = 99,514.30 × 45,303.54
  4. Step 4: Simplify right side
    72,158.54x = 4,508,350,070.62
  5. Step 5: Solve for x
    x = 4,508,350,070.62/72,158.54
  6. Step 6: Final answer
    x = 62,478.40

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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.