Home / 85,715.28-118,280.28-47,984.40

Finding the Fourth Proportional to 85,715.28, 118,280.28 and 47,984.40

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Solution

The fourth proportional to 85,715.28, 118,280.28 and 47,984.40 is: 66,214.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,715.28 : 118,280.28 = 47,984.40 : x
  2. Step 2: Convert to fraction form
    85,715.28/118,280.28 = 47,984.40/x
  3. Step 3: Cross multiply
    85,715.28x = 118,280.28 × 47,984.40
  4. Step 4: Simplify right side
    85,715.28x = 5,675,608,267.63
  5. Step 5: Solve for x
    x = 5,675,608,267.63/85,715.28
  6. Step 6: Final answer
    x = 66,214.66

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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.