Home / 85,015.02-117,320.40-47,289.28

Finding the Fourth Proportional to 85,015.02, 117,320.40 and 47,289.28

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Solution

The fourth proportional to 85,015.02, 117,320.40 and 47,289.28 is: 65,259.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,015.02 : 117,320.40 = 47,289.28 : x
  2. Step 2: Convert to fraction form
    85,015.02/117,320.40 = 47,289.28/x
  3. Step 3: Cross multiply
    85,015.02x = 117,320.40 × 47,289.28
  4. Step 4: Simplify right side
    85,015.02x = 5,547,997,245.31
  5. Step 5: Solve for x
    x = 5,547,997,245.31/85,015.02
  6. Step 6: Final answer
    x = 65,259.02

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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.