Home / 77,312,378.40-115,982,564.40-38,877,165.60

Finding the Fourth Proportional to 77,312,378.40, 115,982,564.40 and 38,877,165.60

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Solution

The fourth proportional to 77,312,378.40, 115,982,564.40 and 38,877,165.60 is: 58,322,786.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,312,378.40 : 115,982,564.40 = 38,877,165.60 : x
  2. Step 2: Convert to fraction form
    77,312,378.40/115,982,564.40 = 38,877,165.60/x
  3. Step 3: Cross multiply
    77,312,378.40x = 115,982,564.40 × 38,877,165.60
  4. Step 4: Simplify right side
    77,312,378.40x = 4,509,073,362,891,465
  5. Step 5: Solve for x
    x = 4,509,073,362,891,465/77,312,378.40
  6. Step 6: Final answer
    x = 58,322,786.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.