Home / 43,287.80-64,931.70-28,513.40

Finding the Fourth Proportional to 43,287.80, 64,931.70 and 28,513.40

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Solution

The fourth proportional to 43,287.80, 64,931.70 and 28,513.40 is: 42,770.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,287.80 : 64,931.70 = 28,513.40 : x
  2. Step 2: Convert to fraction form
    43,287.80/64,931.70 = 28,513.40/x
  3. Step 3: Cross multiply
    43,287.80x = 64,931.70 × 28,513.40
  4. Step 4: Simplify right side
    43,287.80x = 1,851,423,534.78
  5. Step 5: Solve for x
    x = 1,851,423,534.78/43,287.80
  6. Step 6: Final answer
    x = 42,770.10

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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.