Home / 85,681.08-118,402.56-64,423.44

Finding the Fourth Proportional to 85,681.08, 118,402.56 and 64,423.44

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Solution

The fourth proportional to 85,681.08, 118,402.56 and 64,423.44 is: 89,026.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,681.08 : 118,402.56 = 64,423.44 : x
  2. Step 2: Convert to fraction form
    85,681.08/118,402.56 = 64,423.44/x
  3. Step 3: Cross multiply
    85,681.08x = 118,402.56 × 64,423.44
  4. Step 4: Simplify right side
    85,681.08x = 7,627,900,220.01
  5. Step 5: Solve for x
    x = 7,627,900,220.01/85,681.08
  6. Step 6: Final answer
    x = 89,026.66

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1.5x scale

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.