Home / 93,045.11-128,403.09-55,312.07

Finding the Fourth Proportional to 93,045.11, 128,403.09 and 55,312.07

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Solution

The fourth proportional to 93,045.11, 128,403.09 and 55,312.07 is: 76,331.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,045.11 : 128,403.09 = 55,312.07 : x
  2. Step 2: Convert to fraction form
    93,045.11/128,403.09 = 55,312.07/x
  3. Step 3: Cross multiply
    93,045.11x = 128,403.09 × 55,312.07
  4. Step 4: Simplify right side
    93,045.11x = 7,102,240,060.28
  5. Step 5: Solve for x
    x = 7,102,240,060.28/93,045.11
  6. Step 6: Final answer
    x = 76,331.15

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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.