Home / 55,880.16-77,116.32-30,730.56

Finding the Fourth Proportional to 55,880.16, 77,116.32 and 30,730.56

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Solution

The fourth proportional to 55,880.16, 77,116.32 and 30,730.56 is: 42,409.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,880.16 : 77,116.32 = 30,730.56 : x
  2. Step 2: Convert to fraction form
    55,880.16/77,116.32 = 30,730.56/x
  3. Step 3: Cross multiply
    55,880.16x = 77,116.32 × 30,730.56
  4. Step 4: Simplify right side
    55,880.16x = 2,369,827,698.74
  5. Step 5: Solve for x
    x = 2,369,827,698.74/55,880.16
  6. Step 6: Final answer
    x = 42,409.11

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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.