Home / 76,305.42-105,307.56-42,317.28

Finding the Fourth Proportional to 76,305.42, 105,307.56 and 42,317.28

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Solution

The fourth proportional to 76,305.42, 105,307.56 and 42,317.28 is: 58,401.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,305.42 : 105,307.56 = 42,317.28 : x
  2. Step 2: Convert to fraction form
    76,305.42/105,307.56 = 42,317.28/x
  3. Step 3: Cross multiply
    76,305.42x = 105,307.56 × 42,317.28
  4. Step 4: Simplify right side
    76,305.42x = 4,456,329,502.64
  5. Step 5: Solve for x
    x = 4,456,329,502.64/76,305.42
  6. Step 6: Final answer
    x = 58,401.22

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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.