Home / 76,127.65-105,055.28-42,136.20

Finding the Fourth Proportional to 76,127.65, 105,055.28 and 42,136.20

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Solution

The fourth proportional to 76,127.65, 105,055.28 and 42,136.20 is: 58,147.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,127.65 : 105,055.28 = 42,136.20 : x
  2. Step 2: Convert to fraction form
    76,127.65/105,055.28 = 42,136.20/x
  3. Step 3: Cross multiply
    76,127.65x = 105,055.28 × 42,136.20
  4. Step 4: Simplify right side
    76,127.65x = 4,426,630,236.47
  5. Step 5: Solve for x
    x = 4,426,630,236.47/76,127.65
  6. Step 6: Final answer
    x = 58,147.47

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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.