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Finding the Fourth Proportional to 145,855.68, 218,812.80 and 46,031.28

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Solution

The fourth proportional to 145,855.68, 218,812.80 and 46,031.28 is: 69,056.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,855.68 : 218,812.80 = 46,031.28 : x
  2. Step 2: Convert to fraction form
    145,855.68/218,812.80 = 46,031.28/x
  3. Step 3: Cross multiply
    145,855.68x = 218,812.80 × 46,031.28
  4. Step 4: Simplify right side
    145,855.68x = 10,072,233,264.38
  5. Step 5: Solve for x
    x = 10,072,233,264.38/145,855.68
  6. Step 6: Final answer
    x = 69,056.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.