Home / 77,970.90-107,590.80-43,979.95

Finding the Fourth Proportional to 77,970.90, 107,590.80 and 43,979.95

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Solution

The fourth proportional to 77,970.90, 107,590.80 and 43,979.95 is: 60,687.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,970.90 : 107,590.80 = 43,979.95 : x
  2. Step 2: Convert to fraction form
    77,970.90/107,590.80 = 43,979.95/x
  3. Step 3: Cross multiply
    77,970.90x = 107,590.80 × 43,979.95
  4. Step 4: Simplify right side
    77,970.90x = 4,731,837,466.51
  5. Step 5: Solve for x
    x = 4,731,837,466.51/77,970.90
  6. Step 6: Final answer
    x = 60,687.22

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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.