Home / 65,547.79-90,420.47-54,149.87

Finding the Fourth Proportional to 65,547.79, 90,420.47 and 54,149.87

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Solution

The fourth proportional to 65,547.79, 90,420.47 and 54,149.87 is: 74,697.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,547.79 : 90,420.47 = 54,149.87 : x
  2. Step 2: Convert to fraction form
    65,547.79/90,420.47 = 54,149.87/x
  3. Step 3: Cross multiply
    65,547.79x = 90,420.47 × 54,149.87
  4. Step 4: Simplify right side
    65,547.79x = 4,896,256,695.84
  5. Step 5: Solve for x
    x = 4,896,256,695.84/65,547.79
  6. Step 6: Final answer
    x = 74,697.51

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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.