Home / 85,111.40-117,459.30-56,799.08

Finding the Fourth Proportional to 85,111.40, 117,459.30 and 56,799.08

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Solution

The fourth proportional to 85,111.40, 117,459.30 and 56,799.08 is: 78,386.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,111.40 : 117,459.30 = 56,799.08 : x
  2. Step 2: Convert to fraction form
    85,111.40/117,459.30 = 56,799.08/x
  3. Step 3: Cross multiply
    85,111.40x = 117,459.30 × 56,799.08
  4. Step 4: Simplify right side
    85,111.40x = 6,671,580,177.44
  5. Step 5: Solve for x
    x = 6,671,580,177.44/85,111.40
  6. Step 6: Final answer
    x = 78,386.45

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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.