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Finding the Fourth Proportional to 85,280.79, 117,687.95 and 47,041.68

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Solution

The fourth proportional to 85,280.79, 117,687.95 and 47,041.68 is: 64,917.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,280.79 : 117,687.95 = 47,041.68 : x
  2. Step 2: Convert to fraction form
    85,280.79/117,687.95 = 47,041.68/x
  3. Step 3: Cross multiply
    85,280.79x = 117,687.95 × 47,041.68
  4. Step 4: Simplify right side
    85,280.79x = 5,536,238,883.76
  5. Step 5: Solve for x
    x = 5,536,238,883.76/85,280.79
  6. Step 6: Final answer
    x = 64,917.77

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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.