Home / 78,825,036.40-108,829,734.80-70,550,769.76

Finding the Fourth Proportional to 78,825,036.40, 108,829,734.80 and 70,550,769.76

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Solution

The fourth proportional to 78,825,036.40, 108,829,734.80 and 70,550,769.76 is: 97,405,873.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,825,036.40 : 108,829,734.80 = 70,550,769.76 : x
  2. Step 2: Convert to fraction form
    78,825,036.40/108,829,734.80 = 70,550,769.76/x
  3. Step 3: Cross multiply
    78,825,036.40x = 108,829,734.80 × 70,550,769.76
  4. Step 4: Simplify right side
    78,825,036.40x = 7,678,021,562,916,660
  5. Step 5: Solve for x
    x = 7,678,021,562,916,660/78,825,036.40
  6. Step 6: Final answer
    x = 97,405,873.99

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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.