Home / 76,239.45-105,211.06-42,248.51

Finding the Fourth Proportional to 76,239.45, 105,211.06 and 42,248.51

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Solution

The fourth proportional to 76,239.45, 105,211.06 and 42,248.51 is: 58,303.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,239.45 : 105,211.06 = 42,248.51 : x
  2. Step 2: Convert to fraction form
    76,239.45/105,211.06 = 42,248.51/x
  3. Step 3: Cross multiply
    76,239.45x = 105,211.06 × 42,248.51
  4. Step 4: Simplify right side
    76,239.45x = 4,445,010,151.87
  5. Step 5: Solve for x
    x = 4,445,010,151.87/76,239.45
  6. Step 6: Final answer
    x = 58,303.28

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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.