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Finding the Fourth Proportional to 72,348.04, 99,759.90 and 45,458.20

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Solution

The fourth proportional to 72,348.04, 99,759.90 and 45,458.20 is: 62,681.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,348.04 : 99,759.90 = 45,458.20 : x
  2. Step 2: Convert to fraction form
    72,348.04/99,759.90 = 45,458.20/x
  3. Step 3: Cross multiply
    72,348.04x = 99,759.90 × 45,458.20
  4. Step 4: Simplify right side
    72,348.04x = 4,534,905,486.18
  5. Step 5: Solve for x
    x = 4,534,905,486.18/72,348.04
  6. Step 6: Final answer
    x = 62,681.80

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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.