Home / 85,533.12-118,033.12-47,807.28

Finding the Fourth Proportional to 85,533.12, 118,033.12 and 47,807.28

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Solution

The fourth proportional to 85,533.12, 118,033.12 and 47,807.28 is: 65,972.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,533.12 : 118,033.12 = 47,807.28 : x
  2. Step 2: Convert to fraction form
    85,533.12/118,033.12 = 47,807.28/x
  3. Step 3: Cross multiply
    85,533.12x = 118,033.12 × 47,807.28
  4. Step 4: Simplify right side
    85,533.12x = 5,642,842,417.11
  5. Step 5: Solve for x
    x = 5,642,842,417.11/85,533.12
  6. Step 6: Final answer
    x = 65,972.60

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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.