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Finding the Fourth Proportional to 43,547.70, 64,960.04 and 42,090.02

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Solution

The fourth proportional to 43,547.70, 64,960.04 and 42,090.02 is: 62,785.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,547.70 : 64,960.04 = 42,090.02 : x
  2. Step 2: Convert to fraction form
    43,547.70/64,960.04 = 42,090.02/x
  3. Step 3: Cross multiply
    43,547.70x = 64,960.04 × 42,090.02
  4. Step 4: Simplify right side
    43,547.70x = 2,734,169,382.80
  5. Step 5: Solve for x
    x = 2,734,169,382.80/43,547.70
  6. Step 6: Final answer
    x = 62,785.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.