Home / 77,948.31-107,569.65-47,312.55

Finding the Fourth Proportional to 77,948.31, 107,569.65 and 47,312.55

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Solution

The fourth proportional to 77,948.31, 107,569.65 and 47,312.55 is: 65,291.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,948.31 : 107,569.65 = 47,312.55 : x
  2. Step 2: Convert to fraction form
    77,948.31/107,569.65 = 47,312.55/x
  3. Step 3: Cross multiply
    77,948.31x = 107,569.65 × 47,312.55
  4. Step 4: Simplify right side
    77,948.31x = 5,089,394,444.11
  5. Step 5: Solve for x
    x = 5,089,394,444.11/77,948.31
  6. Step 6: Final answer
    x = 65,291.92

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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.