Home / 42,912,145.20-64,368,217.80-38,209,220.40

Finding the Fourth Proportional to 42,912,145.20, 64,368,217.80 and 38,209,220.40

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Solution

The fourth proportional to 42,912,145.20, 64,368,217.80 and 38,209,220.40 is: 57,313,830.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,912,145.20 : 64,368,217.80 = 38,209,220.40 : x
  2. Step 2: Convert to fraction form
    42,912,145.20/64,368,217.80 = 38,209,220.40/x
  3. Step 3: Cross multiply
    42,912,145.20x = 64,368,217.80 × 38,209,220.40
  4. Step 4: Simplify right side
    42,912,145.20x = 2,459,459,420,675,403
  5. Step 5: Solve for x
    x = 2,459,459,420,675,403/42,912,145.20
  6. Step 6: Final answer
    x = 57,313,830.60

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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.