Home / 30,342,641.40-45,513,962.10-20,138,974.20

Finding the Fourth Proportional to 30,342,641.40, 45,513,962.10 and 20,138,974.20

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Solution

The fourth proportional to 30,342,641.40, 45,513,962.10 and 20,138,974.20 is: 30,208,461.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,342,641.40 : 45,513,962.10 = 20,138,974.20 : x
  2. Step 2: Convert to fraction form
    30,342,641.40/45,513,962.10 = 20,138,974.20/x
  3. Step 3: Cross multiply
    30,342,641.40x = 45,513,962.10 × 20,138,974.20
  4. Step 4: Simplify right side
    30,342,641.40x = 916,604,508,471,677.88
  5. Step 5: Solve for x
    x = 916,604,508,471,677.88/30,342,641.40
  6. Step 6: Final answer
    x = 30,208,461.30

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1.5x scale

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.