Home / 77,880.04-107,474.40-42,070.06

Finding the Fourth Proportional to 77,880.04, 107,474.40 and 42,070.06

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Solution

The fourth proportional to 77,880.04, 107,474.40 and 42,070.06 is: 58,056.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,880.04 : 107,474.40 = 42,070.06 : x
  2. Step 2: Convert to fraction form
    77,880.04/107,474.40 = 42,070.06/x
  3. Step 3: Cross multiply
    77,880.04x = 107,474.40 × 42,070.06
  4. Step 4: Simplify right side
    77,880.04x = 4,521,454,456.46
  5. Step 5: Solve for x
    x = 4,521,454,456.46/77,880.04
  6. Step 6: Final answer
    x = 58,056.65

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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.