Home / 85,705.28-118,266.72-47,974.40

Finding the Fourth Proportional to 85,705.28, 118,266.72 and 47,974.40

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Solution

The fourth proportional to 85,705.28, 118,266.72 and 47,974.40 is: 66,201.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,705.28 : 118,266.72 = 47,974.40 : x
  2. Step 2: Convert to fraction form
    85,705.28/118,266.72 = 47,974.40/x
  3. Step 3: Cross multiply
    85,705.28x = 118,266.72 × 47,974.40
  4. Step 4: Simplify right side
    85,705.28x = 5,673,774,931.97
  5. Step 5: Solve for x
    x = 5,673,774,931.97/85,705.28
  6. Step 6: Final answer
    x = 66,201.00

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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.