Home / 76,116.90-105,041.51-42,127.72

Finding the Fourth Proportional to 76,116.90, 105,041.51 and 42,127.72

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Solution

The fourth proportional to 76,116.90, 105,041.51 and 42,127.72 is: 58,136.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,116.90 : 105,041.51 = 42,127.72 : x
  2. Step 2: Convert to fraction form
    76,116.90/105,041.51 = 42,127.72/x
  3. Step 3: Cross multiply
    76,116.90x = 105,041.51 × 42,127.72
  4. Step 4: Simplify right side
    76,116.90x = 4,425,159,111.02
  5. Step 5: Solve for x
    x = 4,425,159,111.02/76,116.90
  6. Step 6: Final answer
    x = 58,136.36

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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.