Home / 77,931.52-116,880-46,775.68

Finding the Fourth Proportional to 77,931.52, 116,880 and 46,775.68

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Solution

The fourth proportional to 77,931.52, 116,880 and 46,775.68 is: 70,153.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,931.52 : 116,880 = 46,775.68 : x
  2. Step 2: Convert to fraction form
    77,931.52/116,880 = 46,775.68/x
  3. Step 3: Cross multiply
    77,931.52x = 116,880 × 46,775.68
  4. Step 4: Simplify right side
    77,931.52x = 5,467,141,478.40
  5. Step 5: Solve for x
    x = 5,467,141,478.40/77,931.52
  6. Step 6: Final answer
    x = 70,153.15

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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.