Home / 72,738,047.40-109,107,071.10-70,187,130.60

Finding the Fourth Proportional to 72,738,047.40, 109,107,071.10 and 70,187,130.60

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Solution

The fourth proportional to 72,738,047.40, 109,107,071.10 and 70,187,130.60 is: 105,280,695.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,738,047.40 : 109,107,071.10 = 70,187,130.60 : x
  2. Step 2: Convert to fraction form
    72,738,047.40/109,107,071.10 = 70,187,130.60/x
  3. Step 3: Cross multiply
    72,738,047.40x = 109,107,071.10 × 70,187,130.60
  4. Step 4: Simplify right side
    72,738,047.40x = 7,657,912,248,679,185
  5. Step 5: Solve for x
    x = 7,657,912,248,679,185/72,738,047.40
  6. Step 6: Final answer
    x = 105,280,695.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.