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Finding the Fourth Proportional to 72,803.34, 100,457.82 and 40,970.34

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Solution

The fourth proportional to 72,803.34, 100,457.82 and 40,970.34 is: 56,533.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,803.34 : 100,457.82 = 40,970.34 : x
  2. Step 2: Convert to fraction form
    72,803.34/100,457.82 = 40,970.34/x
  3. Step 3: Cross multiply
    72,803.34x = 100,457.82 × 40,970.34
  4. Step 4: Simplify right side
    72,803.34x = 4,115,791,041.06
  5. Step 5: Solve for x
    x = 4,115,791,041.06/72,803.34
  6. Step 6: Final answer
    x = 56,533.00

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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.