Home / 38,720,354.85-53,433,248.81-21,316,033.89

Finding the Fourth Proportional to 38,720,354.85, 53,433,248.81 and 21,316,033.89

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Solution

The fourth proportional to 38,720,354.85, 53,433,248.81 and 21,316,033.89 is: 29,415,663.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,720,354.85 : 53,433,248.81 = 21,316,033.89 : x
  2. Step 2: Convert to fraction form
    38,720,354.85/53,433,248.81 = 21,316,033.89/x
  3. Step 3: Cross multiply
    38,720,354.85x = 53,433,248.81 × 21,316,033.89
  4. Step 4: Simplify right side
    38,720,354.85x = 1,138,984,942,380,182
  5. Step 5: Solve for x
    x = 1,138,984,942,380,182/38,720,354.85
  6. Step 6: Final answer
    x = 29,415,663.85

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1.5x scale

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.