Home / 42,988.80-64,457.28-19,634.88

Finding the Fourth Proportional to 42,988.80, 64,457.28 and 19,634.88

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Solution

The fourth proportional to 42,988.80, 64,457.28 and 19,634.88 is: 29,440.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,988.80 : 64,457.28 = 19,634.88 : x
  2. Step 2: Convert to fraction form
    42,988.80/64,457.28 = 19,634.88/x
  3. Step 3: Cross multiply
    42,988.80x = 64,457.28 × 19,634.88
  4. Step 4: Simplify right side
    42,988.80x = 1,265,610,957.93
  5. Step 5: Solve for x
    x = 1,265,610,957.93/42,988.80
  6. Step 6: Final answer
    x = 29,440.48

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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.