Home / 90,442,908.72-124,810,866.90-49,190,490

Finding the Fourth Proportional to 90,442,908.72, 124,810,866.90 and 49,190,490

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Solution

The fourth proportional to 90,442,908.72, 124,810,866.90 and 49,190,490 is: 67,882,687.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,442,908.72 : 124,810,866.90 = 49,190,490 : x
  2. Step 2: Convert to fraction form
    90,442,908.72/124,810,866.90 = 49,190,490/x
  3. Step 3: Cross multiply
    90,442,908.72x = 124,810,866.90 × 49,190,490
  4. Step 4: Simplify right side
    90,442,908.72x = 6,139,507,700,135,781
  5. Step 5: Solve for x
    x = 6,139,507,700,135,781/90,442,908.72
  6. Step 6: Final answer
    x = 67,882,687.40

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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.