Home / 77,856.36-106,741.07-76,437.60

Finding the Fourth Proportional to 77,856.36, 106,741.07 and 76,437.60

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Solution

The fourth proportional to 77,856.36, 106,741.07 and 76,437.60 is: 104,795.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,856.36 : 106,741.07 = 76,437.60 : x
  2. Step 2: Convert to fraction form
    77,856.36/106,741.07 = 76,437.60/x
  3. Step 3: Cross multiply
    77,856.36x = 106,741.07 × 76,437.60
  4. Step 4: Simplify right side
    77,856.36x = 8,159,030,830.04
  5. Step 5: Solve for x
    x = 8,159,030,830.04/77,856.36
  6. Step 6: Final answer
    x = 104,795.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.