Home / 89,931.72-124,155.48-54,130.50

Finding the Fourth Proportional to 89,931.72, 124,155.48 and 54,130.50

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Solution

The fourth proportional to 89,931.72, 124,155.48 and 54,130.50 is: 74,730.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,931.72 : 124,155.48 = 54,130.50 : x
  2. Step 2: Convert to fraction form
    89,931.72/124,155.48 = 54,130.50/x
  3. Step 3: Cross multiply
    89,931.72x = 124,155.48 × 54,130.50
  4. Step 4: Simplify right side
    89,931.72x = 6,720,598,210.14
  5. Step 5: Solve for x
    x = 6,720,598,210.14/89,931.72
  6. Step 6: Final answer
    x = 74,730.01

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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.