Home / 30,944,407.28-42,668,845.08-21,156,439.28

Finding the Fourth Proportional to 30,944,407.28, 42,668,845.08 and 21,156,439.28

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Solution

The fourth proportional to 30,944,407.28, 42,668,845.08 and 21,156,439.28 is: 29,172,341.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,944,407.28 : 42,668,845.08 = 21,156,439.28 : x
  2. Step 2: Convert to fraction form
    30,944,407.28/42,668,845.08 = 21,156,439.28/x
  3. Step 3: Cross multiply
    30,944,407.28x = 42,668,845.08 × 21,156,439.28
  4. Step 4: Simplify right side
    30,944,407.28x = 902,720,830,082,746.75
  5. Step 5: Solve for x
    x = 902,720,830,082,746.75/30,944,407.28
  6. Step 6: Final answer
    x = 29,172,341.93

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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.