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Finding the Fourth Proportional to 85,368.16, 117,808.08 and 47,641.60

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Solution

The fourth proportional to 85,368.16, 117,808.08 and 47,641.60 is: 65,745.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,368.16 : 117,808.08 = 47,641.60 : x
  2. Step 2: Convert to fraction form
    85,368.16/117,808.08 = 47,641.60/x
  3. Step 3: Cross multiply
    85,368.16x = 117,808.08 × 47,641.60
  4. Step 4: Simplify right side
    85,368.16x = 5,612,565,424.13
  5. Step 5: Solve for x
    x = 5,612,565,424.13/85,368.16
  6. Step 6: Final answer
    x = 65,745.42

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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.