Home / 31,507,320.90-47,260,981.35-20,160,581.70

Finding the Fourth Proportional to 31,507,320.90, 47,260,981.35 and 20,160,581.70

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Solution

The fourth proportional to 31,507,320.90, 47,260,981.35 and 20,160,581.70 is: 30,240,872.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,507,320.90 : 47,260,981.35 = 20,160,581.70 : x
  2. Step 2: Convert to fraction form
    31,507,320.90/47,260,981.35 = 20,160,581.70/x
  3. Step 3: Cross multiply
    31,507,320.90x = 47,260,981.35 × 20,160,581.70
  4. Step 4: Simplify right side
    31,507,320.90x = 952,808,875,728,851.25
  5. Step 5: Solve for x
    x = 952,808,875,728,851.25/31,507,320.90
  6. Step 6: Final answer
    x = 30,240,872.55

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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.