Home / 85,104.64-117,437.34-47,378.08

Finding the Fourth Proportional to 85,104.64, 117,437.34 and 47,378.08

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Solution

The fourth proportional to 85,104.64, 117,437.34 and 47,378.08 is: 65,377.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,104.64 : 117,437.34 = 47,378.08 : x
  2. Step 2: Convert to fraction form
    85,104.64/117,437.34 = 47,378.08/x
  3. Step 3: Cross multiply
    85,104.64x = 117,437.34 × 47,378.08
  4. Step 4: Simplify right side
    85,104.64x = 5,563,955,689.51
  5. Step 5: Solve for x
    x = 5,563,955,689.51/85,104.64
  6. Step 6: Final answer
    x = 65,377.82

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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.