Home / 81,068.08-111,875.54-47,079.40

Finding the Fourth Proportional to 81,068.08, 111,875.54 and 47,079.40

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Solution

The fourth proportional to 81,068.08, 111,875.54 and 47,079.40 is: 64,970.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,068.08 : 111,875.54 = 47,079.40 : x
  2. Step 2: Convert to fraction form
    81,068.08/111,875.54 = 47,079.40/x
  3. Step 3: Cross multiply
    81,068.08x = 111,875.54 × 47,079.40
  4. Step 4: Simplify right side
    81,068.08x = 5,267,033,297.88
  5. Step 5: Solve for x
    x = 5,267,033,297.88/81,068.08
  6. Step 6: Final answer
    x = 64,970.50

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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.