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Finding the Fourth Proportional to 72,341.68, 99,833.40 and 40,510.64

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Solution

The fourth proportional to 72,341.68, 99,833.40 and 40,510.64 is: 55,905.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,341.68 : 99,833.40 = 40,510.64 : x
  2. Step 2: Convert to fraction form
    72,341.68/99,833.40 = 40,510.64/x
  3. Step 3: Cross multiply
    72,341.68x = 99,833.40 × 40,510.64
  4. Step 4: Simplify right side
    72,341.68x = 4,044,314,927.38
  5. Step 5: Solve for x
    x = 4,044,314,927.38/72,341.68
  6. Step 6: Final answer
    x = 55,905.74

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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.