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Finding the Fourth Proportional to 72,391.83, 99,866.93 and 45,549.13

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Solution

The fourth proportional to 72,391.83, 99,866.93 and 45,549.13 is: 62,836.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,391.83 : 99,866.93 = 45,549.13 : x
  2. Step 2: Convert to fraction form
    72,391.83/99,866.93 = 45,549.13/x
  3. Step 3: Cross multiply
    72,391.83x = 99,866.93 × 45,549.13
  4. Step 4: Simplify right side
    72,391.83x = 4,548,851,549.53
  5. Step 5: Solve for x
    x = 4,548,851,549.53/72,391.83
  6. Step 6: Final answer
    x = 62,836.54

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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.