Home / 93,215.36-128,636.16-55,490.24

Finding the Fourth Proportional to 93,215.36, 128,636.16 and 55,490.24

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Solution

The fourth proportional to 93,215.36, 128,636.16 and 55,490.24 is: 76,575.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,215.36 : 128,636.16 = 55,490.24 : x
  2. Step 2: Convert to fraction form
    93,215.36/128,636.16 = 55,490.24/x
  3. Step 3: Cross multiply
    93,215.36x = 128,636.16 × 55,490.24
  4. Step 4: Simplify right side
    93,215.36x = 7,138,051,391.08
  5. Step 5: Solve for x
    x = 7,138,051,391.08/93,215.36
  6. Step 6: Final answer
    x = 76,575.91

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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.