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Finding the Fourth Proportional to 93,571.48, 129,128.80 and 51,129.10

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Solution

The fourth proportional to 93,571.48, 129,128.80 and 51,129.10 is: 70,558.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,571.48 : 129,128.80 = 51,129.10 : x
  2. Step 2: Convert to fraction form
    93,571.48/129,128.80 = 51,129.10/x
  3. Step 3: Cross multiply
    93,571.48x = 129,128.80 × 51,129.10
  4. Step 4: Simplify right side
    93,571.48x = 6,602,239,328.08
  5. Step 5: Solve for x
    x = 6,602,239,328.08/93,571.48
  6. Step 6: Final answer
    x = 70,558.24

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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.