Home / 85,680.84-118,402.22-64,423.20

Finding the Fourth Proportional to 85,680.84, 118,402.22 and 64,423.20

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Solution

The fourth proportional to 85,680.84, 118,402.22 and 64,423.20 is: 89,026.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,680.84 : 118,402.22 = 64,423.20 : x
  2. Step 2: Convert to fraction form
    85,680.84/118,402.22 = 64,423.20/x
  3. Step 3: Cross multiply
    85,680.84x = 118,402.22 × 64,423.20
  4. Step 4: Simplify right side
    85,680.84x = 7,627,849,577.39
  5. Step 5: Solve for x
    x = 7,627,849,577.39/85,680.84
  6. Step 6: Final answer
    x = 89,026.32

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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.