Home / 85,681.34-118,402.91-64,423.70

Finding the Fourth Proportional to 85,681.34, 118,402.91 and 64,423.70

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Solution

The fourth proportional to 85,681.34, 118,402.91 and 64,423.70 is: 89,027.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,681.34 : 118,402.91 = 64,423.70 : x
  2. Step 2: Convert to fraction form
    85,681.34/118,402.91 = 64,423.70/x
  3. Step 3: Cross multiply
    85,681.34x = 118,402.91 × 64,423.70
  4. Step 4: Simplify right side
    85,681.34x = 7,627,953,552.97
  5. Step 5: Solve for x
    x = 7,627,953,552.97/85,681.34
  6. Step 6: Final answer
    x = 89,027.01

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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.