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Finding the Fourth Proportional to 72,354,393, 99,837,822.35 and 42,984,970.74

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Solution

The fourth proportional to 72,354,393, 99,837,822.35 and 42,984,970.74 is: 59,312,582.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,354,393 : 99,837,822.35 = 42,984,970.74 : x
  2. Step 2: Convert to fraction form
    72,354,393/99,837,822.35 = 42,984,970.74/x
  3. Step 3: Cross multiply
    72,354,393x = 99,837,822.35 × 42,984,970.74
  4. Step 4: Simplify right side
    72,354,393x = 4,291,525,872,245,143.50
  5. Step 5: Solve for x
    x = 4,291,525,872,245,143.50/72,354,393
  6. Step 6: Final answer
    x = 59,312,582.06

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.